The XQuery language does not provide an explicit group-by construct.
XQuery语言不提供显式的group - by结构。
The XQuery language now has both a human-readable syntax and an XML-based syntax.
现在XQuery语言既有一种方便人们阅读的语法，也有一种基于XML的语法。
There is no standard yet to include text search functionally into the XQuery language.
还没有将文本搜索功能包含进 XQuery 语言中的标准。
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